I dealt with this for years. The idea of posting here my problem was phenomenal, as you will see my progress.

I started with even problems sitting down. Yes, I had THAT movement restriction. I basicaly needed to throw me in a chair to sit down.

A combination of a past car accident and some years office work did that.

I had (and have but im improving a lot every day) a lot of posture problems without noticing. The only visible outcome of this chain of problems was that everry time I tried to squat I basically fall backwards.

The problem whas that I wasnt proyecting my hips acordingly, you have the video of the old neuropattern in the post mentioned above.

This routine is amazing, it simply works, surely you dont have half the movility issue you think you have! just try this, Its working for me, here is the last video, compare it to the first video in the post i mentioned early.